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AUREL XTR-915 Instruction Manual

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XTR-915 mod. Transceiver
Miniaturized data transceiver module, 100 Kbps maximum speed, 914,50 MHz operating frequency.
Especially suitable for use in North America Countries where the band assigned to short range devices (SRD)
is 902–928 MHz.

Pin-Out and block diagram

1 GND
RX-TX
switch
2 Antenna
Ampl.
3 GND
4 NC
5 NC
Preamp
O.L.
6 NC
PLL
Controlled
7 NC
BPF
8 NC
Saw Filter
9 GND
Mixer

Connections

Pin 1-3
RF GND
Pin 2
Antenna
Pin 9-10-18
GND
Pin 11
CD
Pin 12
RXD
Pin 13
AF
Pin 14
TXD
Pin 15
TX ENABLE
Pin 16
RX ENABLE
Pin 17
Vcc
The technical tests and reports have been carried out and obtained by the laboratories of:
Messrs PRIMA RICERCA & SVILUPPO – via Campagna, 58 – 22020 Gaggino Faloppio (CO).
Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device's misuse.
AUREL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +390546941124 – Fax: +390546941660
http://www.aurel.it
- email:
aurel@aurel.it
Vcc Tx-Rx
PLL Controlled
Power Supply
Oscillator
RX-TX
RX-TX
Enable switch
Tx Enable
Rx Enable
50 KHz
Buffer
Slicer
IF limiter
PLL
Demod.
RF circuit GND
50Ω impedance antenna connection
Connections to GND. Internally connected also to the module's
shield.
Carrier Detect. With enabled receiver, a low signal (voltage level 0V),
indicates that the receiver detects an RF carrier. The line activates
with an RF signal of minimum –96dBm applied to pin 2 (antenna).
High impedance output available only for loads under CMOS logic.
Receiver data output. Load impedance allowed: over 100KΩ without
any capacitor in parallel.
Filtered and buffered output of the FM detector. Load impedance
allowed: over 2KΩ and less than 100pF.
Input to transmitter; accepts serial data in TTL logic (0 ÷ 5V) with a
10KΩ load impedance.
Active when low, (voltage level 0V), enables the transmitter circuit.
Max 1mA
Active when low, (voltage level 0V), enables the receiver circuit.
Max. 0,5 mA
Connection to the positive pole of the supply voltage (+5V ± 10%)
Mechanical dimensions
18 GND
Aurel
17 Vcc
logo
16 Rx EN
15 Tx EN
Product
14 Mod. in
name
13 Analog out
12 Data out
CE
11 C.D.
Mark
10 GND
Lot
week/year
XTR-915

Instruction Manual

XTR-915
Rev. A, January 11th 2002
Pag 1 of 6

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Summary of Contents for AUREL XTR-915

  • Page 1: Instruction Manual

    Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse. AUREL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY Rev. A, January 11th 2002 Tel.: +390546941124 –...
  • Page 2 Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse. AUREL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY Rev. A, January 11th 2002 Tel.: +390546941124 –...
  • Page 3 The circuit characteristics (passband in base band and AC couplings) determine the time has to elapse between each two consecutive level transitions on the line of the serial signal. For the correct operation of the XTR-915, such time must be comprised between 10 and 500 µs. Settling time The Data Slicer requires that for atleast 1 ms before the data themselves, a preamble, composed by a square wave, is transmitted in order to consider reliable the data coming out from the RXD line.
  • Page 4 Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse. AUREL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY Rev. A, January 11th 2002 Tel.: +390546941124 –...
  • Page 5 The device has been designed to allow a minimum switching time between reception and transmission the minimum transmission speed requested permitting. The XTR-915 model shows the less possible time, allowing at most in 2mS to be operative after the inversion Rx/Tx.

  • Page 6: Antenna Connection

    Reference Rules The XTR-915 transceiver is CE certified and in particular it complies with the European Rules EN 300 220, and EN 301 489. The equipment has been tested according to rule EN 60950 and it can be utilized inside a special insulated housing that assures the compliance with the above-mentioned rule.

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